The impact of multiple interventions to reduce household exposure to second-hand tobacco smoke among women: a cluster randomized controlled trial in Kalutara district, Sri Lanka

Table 3 Comparison of median values of knowledge and attitudes related to SHS

Outcomes	Intervention group (n = 329)		Control group (n = 309)		Significance
	Pre	Post	Pre	Post
	Median significance		Median significance
Knowledge on health risk of exposure to SHS	9	11.0	9.0	10.0	Pre p₂ = 0.67
	9	11.0	9.0	10.0	post p₂ < 0.001
	p₁ < 0.001		p₁ < 0.001
Attitude on exposure to SHS	11	12.0	11.0	11.0	pre p₂ = 0.12
	11	12.0	11.0	11.0	Post p₂ = 0.004
	p₁ < 0.001		p₁ < 0.001
Attitudes on right to smoke free living	5.0	5.0	5.0	5.0	pre p₂ = 0.32
	5.0	5.0	5.0	5.0	post p₂ = 0.001
	p₁ < 0.001		p₁ < 0.001		post p₂ = 0.001
Attitudes on women empowerment against SHS	5	8.0	5.0	6.0	pre p₂ = 0.98
	5	8.0	5.0	6.0	post p₂ < 0.001
	p₁ < 0.001		p₁ < 0.001

p₁ = Wilcoxon Signed Ranks Test, between pre and post intervention group and control group
p₂ = Mann-Whitney U Test, between intervention group and control group pre and post

ISSN: 1471-2458